Features and Benefits:?High-strength construction?Extra-wide, 2-1/2 in. center hole for large bit clearance and enhanced cut visibility?Easy to install?Easy replacementThis high-strength sub-base fits Milwaukee BodyGrip? (series 5615 and 5616) and D-handle (series 5619) routers. The extra-large center hole allows for use of larger diameter bits as well as enhances cut visibility. Includes one sub-base.